CN113279815B - Anti-explosion multi-bag type air bag and truss structure combined sealing device and method - Google Patents
Anti-explosion multi-bag type air bag and truss structure combined sealing device and method Download PDFInfo
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- CN113279815B CN113279815B CN202110604627.8A CN202110604627A CN113279815B CN 113279815 B CN113279815 B CN 113279815B CN 202110604627 A CN202110604627 A CN 202110604627A CN 113279815 B CN113279815 B CN 113279815B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
- E21F17/107—Dams, e.g. for ventilation inflatable
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
Abstract
The invention discloses an anti-explosion multi-bag type air bag and truss structure combined sealing device and a method, wherein the device comprises an anti-explosion multi-bag type air bag and a truss structure, the anti-explosion multi-bag type air bag comprises a main air bag and an auxiliary air bag, the main air bag comprises a cuboid air bag and an arched air bag, the cuboid air bag is arranged at the middle lower part of a roadway, the arched air bag is arranged above the cuboid air bag, and the auxiliary air bag is arranged at two sides of the cuboid air bag; the truss structure comprises a main rectangular frame structure and an arc adjusting structure which can be correspondingly adjusted according to the shape change of the top of the roadway, the main rectangular frame structure is arranged at the middle lower part of the roadway, and the arc adjusting structure is connected above the main rectangular frame structure; the main rectangular frame structure and the arc-shaped adjusting structure are formed by connecting a plurality of truss single bodies and/or a plurality of corner connecting bodies. The anti-explosion multi-bag type air bag is sealed by combining the truss structure and the truss structure at the rear part, so that the sliding risk of the air bag is basically eliminated, and the damage of the air bag is effectively avoided.
Description
Technical Field
The invention belongs to the field of mine fire disaster relief, and particularly relates to an anti-explosion multi-bag type air bag and truss structure combined sealing device and a using method of the combined sealing device.
Background
The underground fire of the coal mine not only burns equipment and resources to cause casualties of workers in operation places, but also induces gas explosion, and the effectiveness of disaster relief measures and the rapidity of disaster relief actions are the key points for the success of fire relief. The coal mine tunnel rapid sealing technology is an effective means for fire development and suffocation fire extinguishing, and is widely applied to coal mine fire disaster relief practices.
However, the air current is reduced during the sealing construction, the gas in the sealed area is continuously discharged, the gas concentration is rapidly increased, and the fire source exists in the fire area, so that the danger of gas explosion is greatly increased, and the life safety of sealing construction personnel is seriously threatened. Therefore, the rapid, safe and anti-explosion roadway sealing technology is an urgent need for coal mine fire disaster relief work.
At present, the mine fire takes building sealing as a main sealing measure, the sealing structure is mainly constructed by filling sand and concrete, and because a large amount of materials are required to be prepared and the wall body is built manually, the construction is time-consuming, a large amount of personnel are required to construct on site, and the efficiency is low. In recent years, various underground coal mine rapid sealing technologies are developed in the field of coal mine safety technology research, and the technology mainly comprises a high-expansion-coefficient-based high-polymer rapid filling technology and a rapid solidification and forming inorganic material wall filling technology. However, the technology still has the defects of large engineering quantity and long construction time. The air bag is sealed, and is widely adopted in recent years due to simple structure, convenient carrying, quick installation and good plugging effect. However, such rapid air-bag closures do not have antiknock properties and cannot resist the impact of gas explosion in the enclosed area. Once the fire area is damaged, the disaster area is enlarged, and the disaster relief is more difficult and complicated. On the other hand, from the application conditions of airbag technologies in related industries such as buffer airbags used by military air-dropped materials, ship load-bearing airbags and the like, the airbag technology is applied in practice and has certain impact resistance. Therefore, the material and the structure of the air bag are further improved, the air bag has better anti-explosion buffering performance, a new idea is provided for the development of the coal mine fire emergency rescue technology, and the air bag has important significance for the safety development of the coal mine industry.
The Chinese invention patent with the patent number of CN2020100024393 discloses an anti-explosion multi-bag quick-sealing air bag and a using method thereof, and the air bag greatly improves the anti-explosion performance of bag type sealing through a multi-bag form. However, the air bag has two problems in the use process, namely, the bottom of the roadway is irregular in shape, the air bag is not tightly attached to the bottom, and certain air leakage exists; secondly, in order to improve the frictional resistance of gasbag and tunnel, the gasbag of design is longer along the tunnel direction, and the whole dead weight of gasbag also increases thereupon, because there is certain inclination in the tunnel, and the shearing force that gasbag and tunnel laminating junction bore is great, and gasbag sliding distance is big more, and the material damage to the gasbag is big more, and the risk of gasbag damage increases thereupon. In order to prevent the air bag from slipping, the conventional connection mode of air bag sealing and the roadway is mostly connected with the wall surface by using a rope fastener, a hook, a hanging ring, a metal lock catch and the like (CN2020206802806, CN20182190174 and the like), however, the power of explosion impact waves is huge, the sectional area of the roadway of the coal mine is large at present, and the impact force applied to the air bag is also large even if the position of sealing construction is far away. In addition the tunnel inclination, gasbag self weight is too big, can lead to the self effort of junctions such as knocker, couple, rings to increase, and especially when the gasbag was located the downhill path, the effect of explosion shock wave can make the shearing destructive power that the junction exists great, and the risk that the connection was destroyed such as knocker, couple, rings is very high.
In addition, there are some reports on rapidly constructed airtight walls. The method can rapidly build the closed wall, and in the construction process, because the structure is single and the connection with the four walls of a roadway is not close, the wind pressure born by the closed wall is small, and the strength of the closed wall is enhanced by filling high polymer materials in a matching way. However, the filling process has the problems of difficult material transportation, time consumption, labor consumption and the like. Some adopt the steel construction to build the skeleton in addition, fill the quick airtight wall body that light material is used for resisting shock wave, chinese utility model patent that application number is CN2019208094823 discloses a mine catastrophe regional quick closing device with shock resistance, the airtight steel structure that adopts of the device strengthens the intensity of airtight wall body, filling material is lighter, but the steel structure is difficult to satisfy the cross-section in different tunnels, it is used for the preparation to need actual dimension, this has greatly delayed the inclosed optimum time in fire district, and the steel structure is bulky, and weight is big. Therefore, the quickly constructed closed wall has certain advantages compared with the building closure in a light hinged structure or a steel structure, but still has the defects of low efficiency, poor adaptability and the like.
Disclosure of Invention
Based on the technical problems, the invention provides an anti-explosion multi-bag type air bag and truss structure combined sealing device and a using method of the combined sealing device.
The technical solution adopted by the invention is as follows:
an anti-explosion multi-bag type air bag and truss structure combined sealing device comprises an anti-explosion multi-bag type air bag and a truss structure, wherein the anti-explosion multi-bag type air bag comprises a main air bag and an auxiliary air bag, the main air bag comprises a cuboid air bag and an arched air bag, the cuboid air bag is arranged at the middle lower part of a roadway, the arched air bag is arranged above the cuboid air bag, and the auxiliary air bag is arranged at two sides of the cuboid air bag;
the truss structure comprises a main rectangular frame structure and an arc adjusting structure which can be correspondingly adjusted according to the shape change of the top of the roadway, the main rectangular frame structure is arranged at the middle lower part of the roadway, and the arc adjusting structure is connected above the main rectangular frame structure;
one surface of the main airbag after being inflated is an explosion-facing surface, the other surface of the main airbag is a safety surface, the safety surface is abutted against the front surface of the truss structure, the safety surface of the cuboid airbag is correspondingly abutted against the front surface of the main rectangular frame structure, and the safety surface of the arched airbag is correspondingly abutted against the front surface of the arc-shaped adjusting structure;
the back surfaces of the main rectangular frame structure and the arc-shaped adjusting structure are respectively provided with a plurality of triangular supporting structures, and the triangular supporting structures are correspondingly connected with the bottom surface, the side wall or the top surface of the roadway;
the main rectangular frame structure is formed by sequentially connecting a plurality of truss single bodies, and the arc-shaped adjusting structure and the triangular supporting structure are respectively formed by connecting a plurality of truss single bodies and one or more corner connectors;
the truss single body is of a cuboid frame structure and comprises a first square frame and a second square frame, four prisms are correspondingly connected at the four corners of the first square frame and the second square frame, the first square frame, the second square frame and the four prisms are of an integrated structure, and threaded holes are formed in the first square frame, the second square frame and the prisms at intervals;
the corner connector comprises a first binding surface and a second binding surface, one side of the first binding surface is hinged to one side of the second binding surface, a first arc-shaped strip is arranged on the first binding surface, a first strip-shaped hole is formed in the center line of the first arc-shaped strip, a second arc-shaped strip is arranged on the second binding surface, a second strip-shaped hole is formed in the center line of the second arc-shaped strip, the first arc-shaped strip and the second arc-shaped strip are arranged in a staggered mode, and a locking nut correspondingly penetrates through the first strip-shaped hole and the second strip-shaped hole; threaded holes are also formed in the first binding surface and the second binding surface at intervals;
when two adjacent truss single bodies needing to be connected are positioned on the same straight line or are vertical to each other, one side face of one truss single body is attached to one side face of the other truss single body, corresponding threaded holes are aligned, and screws are used for connection;
when two adjacent truss monomers that need to connect are certain contained angle, pass through a corner connector transition between two truss monomers, the first binding face of corner connector is laminated mutually with the free side of one of them truss, and the second binding face of corner connector is laminated mutually with the free side of another truss, screws up the lock nut on the corner connector to adjust corresponding screw hole well, adopt screwed connection together.
Preferably, the cuboid airbag, the arched airbag and the auxiliary airbag are sewn into a whole and are not communicated with each other; the inner parts of the cuboid airbag, the arched airbag and the auxiliary airbag are provided with a plurality of separation cloth at intervals, and the cuboid airbag, the arched airbag and the auxiliary airbag after inflation are separated into a plurality of independent chambers by the separation cloth.
Preferably, the separating cloth is provided with a one-way check valve for conducting two adjacent independent chambers in one way, and the conducting direction of the one-way check valve is from the explosion-facing surface to the safety surface; a safety relief valve is arranged at the position corresponding to each independent chamber; the safety surfaces of the cuboid airbag, the arched airbag and the auxiliary airbag are all provided with air release valves.
Preferably, the explosion-facing surface of the cuboid airbag is connected with an outlet of a first inflation pipeline, the explosion-facing surface of the arched airbag is connected with an outlet of a second inflation pipeline, the explosion-facing surfaces of the two auxiliary airbags on the two sides of the cuboid airbag are respectively connected with an outlet of a third inflation pipeline and an outlet of a fourth inflation pipeline, an inlet of the first inflation pipeline is connected with an air source, and inlets of the second inflation pipeline, the third inflation pipeline and the fourth inflation pipeline are communicated and connected with the air source through a mixing pipeline; self-operated pressure control valves are arranged on the first inflation pipeline and the mixing pipeline.
Preferably, the anti-explosion multi-bag type airbag further comprises a gas collecting pipeline, a gas inlet of the gas collecting pipeline is located on the explosion-facing surface, and the gas collecting pipeline, the first inflation pipeline and the mixing pipeline are distributed and fixed along one side of a roadway air pipe or a roadway water pipe.
Preferably, the anti-explosion multi-bag type air bag is processed by coating cloth, and a P4U intelligent material cloth layer is additionally arranged on the explosion-facing surface of the anti-explosion multi-bag type air bag;
cuboid gasbag among the antiknock multi-bag formula gasbag is provided with the support rib, vice gasbag is the unshaped gasbag of not adding the muscle.
Preferably, the main rectangular frame structure comprises a square frame, first vertical supporting bars are arranged inside the square frame at intervals, and the square frame and the first vertical supporting bars are formed by sequentially connecting a plurality of truss monomers end to end;
the arc is adjusted the structure and is included the arc frame, is provided with second vertical support bar at the inside interval of arc frame, arc frame and second vertical support bar all are formed by connecting a plurality of truss monomer cooperation a plurality of corner connector.
Preferably, a wood board is further arranged on the front face of the truss structure, the wood board is composed of a plurality of vertically arranged strip-shaped board bodies, and the strip-shaped board bodies are correspondingly connected with the truss monomers on the truss structure.
Preferably, the radians of the first arc-shaped strip and the second arc-shaped strip are both 45 degrees, and the telescopic angle of the corner connector is 0-45 degrees.
A method for combined sealing of an antiknock multi-bag airbag and a truss structure adopts the device, and comprises the following steps:
step one, arrangement work
Conveying an anti-explosion multi-bag type airbag, a gas collecting pipeline, a first inflation pipeline, a second inflation pipeline, a third inflation pipeline, a fourth inflation pipeline, a mixing pipeline, a truss monomer and a wood board to a closed position, cleaning sundries in the closed position, installing and connecting the gas collecting pipeline, the first inflation pipeline, the second inflation pipeline, the third inflation pipeline and the fourth inflation pipeline on an explosion-facing surface of the anti-explosion multi-bag type airbag, connecting the second inflation pipeline, the third inflation pipeline and the fourth inflation pipeline with the mixing pipeline, installing and fixing the first inflation pipeline, the gas collecting pipeline and the mixing pipeline on one side of a pressure air pipe, and enabling the first inflation pipeline, the gas collecting pipeline and the mixing pipeline to be arranged and fixed to a safety surface;
at a proper position behind the anti-explosion multi-bag type air bag, the bottom plate is cut, the width of the bottom plate is the width of the truss monomer, and the depth of the bottom plate is more than half of the height of the truss monomer;
step two, inflating operation and assembling truss structure
After the anti-explosion multi-bag type air bag is spread, the rectangular air bag is inflated through a first inflation pipeline while the roadway bottom plate is cut, and after the rectangular air bag is unfolded, the arch-shaped air bag and the two auxiliary air bags are inflated through a mixing pipeline; connecting the truss single bodies while inflating, successfully connecting the bottom main rectangular frame structure, and then installing an arc-shaped adjusting structure according to the shape of the top of the roadway; mounting a triangular support structure on the back of the main rectangular frame structure and the arc-shaped adjusting structure;
when the width of the main rectangular frame structure is not consistent with that of the roadway, appropriate cutting can be performed on the side wall of the roadway; similarly, the roadway bottom plate area corresponding to the triangular supporting structure at the bottom is also subjected to undercutting treatment, and the triangular supporting structures at the side wall and the top end are connected with an anchor rod and an anchor net of the roadway or are drilled and fixed through expansion screws;
after the truss structures are successfully erected, the strip-shaped plate bodies are connected with the corresponding truss single bodies through screws so as to fill gaps between the square frame and the first vertical supporting strips or gaps between adjacent first vertical supporting strips; for the arc-shaped adjusting structure above the main rectangular frame structure, the strip-shaped plate body can be processed and cut on site and is used for filling a gap between the arc-shaped frame and the second vertical supporting strip;
leaving a place at the main rectangular frame structure, which is not filled with wood boards for pedestrians; after the cuboid air bags are filled, the main rectangular frame structure can be completely sealed by the wood boards, and people are evacuated; after the inflation is finished, the antiknock multi-bag type air bag can be tightly attached to the wall of the roadway by virtue of good elasticity of the coating cloth, and when the inflation reaches the inflation pressure, the air bag can be kept in a pressure-stabilizing state all the time through the self-operated pressure control valve;
step three, gas sample collection
During the sealing period, in order to facilitate the real-time monitoring of parameters of air temperature, gas concentration and oxygen concentration in the sealed interior, gas sample collection can be carried out through a gas collection pipeline;
step four, investigation of personnel
Before the fire area is unsealed, people often need to enter the fire area to detect whether the fire area is completely extinguished; a part of strip-shaped plate bodies are taken out of the main rectangular frame structure, so that pedestrians can pass through the main rectangular frame structure; the arched air bag and the auxiliary air bag are deflated, and the rectangular air bag is not deflated and has certain strength, so that personnel can pass through the upper end of the rectangular air bag by using a scaffold and bring the scaffold to the explosion-facing surface; if the fire area is not completely extinguished, the fire area returns immediately, the fire area passes through the upper end of the cuboid air bag, the air source is connected, the arch air bag and the auxiliary air bag can be rapidly inflated, and personnel can leave the fire area after mounting the strip-shaped plate body and can rapidly finish the re-sealing work; if the fire zone is completely extinguished, the combined sealing device can be deflated, disassembled and recycled;
step five, recovery work
After the sealing is finished, opening the fire area, closing the air source, and opening an air release valve on the safety surface of the anti-explosion multi-bag type air bag; meanwhile, the truss structures are sequentially disassembled from top to bottom, the wood boards are firstly disassembled, and then the truss monomers are sequentially disassembled; and finally, folding the air bag, and recovering and arranging the truss monomer and the wood board.
The beneficial technical effects of the invention are as follows:
1. the anti-explosion multi-bag type air bag has the advantages that due to the fact that the truss structures are arranged behind the anti-explosion multi-bag type air bag and are sealed in a combined mode, the risk of slippage of the air bag is basically eliminated, the length of the air bag along a roadway can be greatly reduced, the weight of the air bag is reduced by nearly half, and the damage of the air bag is effectively avoided; after the blast wave is attenuated by the anti-explosion multi-bag type air bag, the rest blast wave can be blocked by the truss structure, and the blast wave is weakened again. In addition, the air bag does not need to be hung with four walls in the installation process due to combined sealing, the truss structure and the air bag can be constructed simultaneously, only personnel need to be added, and the erection time does not need to be prolonged. And the truss structure can also be used as a temporary closed air blocking device for a mine, is convenient to operate and is easy to recover.
2. The anti-explosion multi-bag type air bag has better anti-explosion buffering performance, is composed of a plurality of air chambers, can effectively avoid the loss caused by the failure of the single-air-chamber air bag, and improves the closed fault-tolerant rate; and because the truss structure is arranged behind the anti-explosion multi-bag type air bag and is combined and sealed with the anti-explosion multi-bag type air bag, the anti-explosion multi-bag type air bag can be designed into an integral structure, and the complex work of mounting and sticking the multi-bag type air bag is reduced.
3. The cuboid airbag and the arched airbag in the anti-explosion multi-bag airbag are inflated in two ways, so that a channel can be provided for personnel investigation when a fire area is unsealed, the existing airbag is closed, most of people cannot walk, and only all the airbags can be detached; the cuboid airbag has certain strength, pedestrians can step on the cuboid airbag to pass through the cuboid airbag, the cuboid airbag occupies most of the volume of a roadway, and if a fire area is not completely extinguished, the cuboid airbag can be sealed again very quickly and conveniently. Because the cuboid gasbag, arch gasbag, vice bag all have safe relief valve, when explosion shock wave acted on meeting the blast face gasbag, gasbag accessible relief valve is deflated by oneself.
4. The invention also adopts a self-operated pressure control valve, so that the operator can leave the air source after switching on the air source (because the cuboid air bag is integrally structured, the arch and the auxiliary bag are only filled, the problems of poor sealing and the like can not occur), and the safety factor of the operator is improved. When the cuboid airbag reaches a certain pressure, the cuboid airbag can be connected with a self-operated pressure control valve to seal the truss pedestrian passage, personnel are withdrawn, and the safety coefficient of the personnel is greatly improved. Because of the existence of the self-operated pressure control valve, the air bag can always keep a pressure stabilizing state without worrying about the influence of air leakage, and even if the air bag has partial friction damage, the air bag can keep certain strength and shape due to continuous inflation. When receiving the blast shock wave effect, gasbag accessible safety side relief valve is deflated by oneself, improves buffering effect, reduces the too high cracked risk in the gasbag. And because the calibrated pressure of the safety relief valve is greater than the maximum pressure value of the self-operated pressure control valve, the combined use of the safety relief valve and the self-operated pressure control valve is not influenced.
5. According to the invention, the auxiliary bags are added on the two sides, so that the bonding capability of the bottom and the roadway is improved, and the plugging effect is enhanced.
6. The truss structure has a relatively light hinge structure, the strength is improved by more than 4 times, and the key problem of large rigid and airtight weight is solved. The truss structure wall body is composed of truss single bodies, corner connectors and wood boards, and the truss single bodies and the corner connectors are connected into various shapes to adapt to various roadway sections. The triangular support structure formed by the truss single bodies and the main rectangular frame structure or the arc-shaped adjusting structure can be connected into a whole by utilizing the corner connecting bodies, and the strength of the truss constructed wall body is improved by connecting the triangular support structure and the four walls of the roadway. As for the light hinge structure (only the bottom support triangular structure), the truss single body is easier to be connected with four walls, and the strength is much higher than that of the light hinge structure. Because the section of the roadway is irregular, the light hinge structure only supports the lower part of the section, and when explosion overpressure comes temporarily, the risk that the upper part of the section is destroyed is higher due to stress concentration. According to the truss constructed wall, the truss single bodies are easy to connect with the four walls of the roadway, the triangular supporting structures are added on the four surfaces of the roadway according to the situation, and the risk that the truss structures are destroyed can be effectively avoided.
Drawings
The invention will be further described with reference to the following detailed description and drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is another angular view of FIG. 1;
FIG. 3 is a further angled view of FIG. 1;
FIG. 4 is a front view of the explosion facing side of FIG. 1;
FIG. 5 is a schematic view of the overall structure of the present invention, mainly illustrating a partition view of an arch-shaped bladder and the like with a partition cloth;
FIG. 6 is a schematic view showing the connection of the inflation line according to the present invention;
FIG. 7 is a schematic view mainly illustrating the structural principle of a rectangular parallelepiped airbag in the antiknock multi-bag airbag of the present invention;
FIG. 8 is a schematic view of a main rectangular frame structure according to the present invention;
FIG. 9 is a schematic view of one embodiment of an arcuate adjustment structure of the present invention;
FIG. 10 is another angular view of FIG. 9;
FIG. 11 is a schematic structural view of a truss cell in accordance with the present invention;
FIG. 12 is a schematic view of the structure of a corner connector according to the present invention;
fig. 13 is a schematic structural view of a strip plate body according to the present invention.
Detailed Description
The air bag is closed, so that a plurality of adverse factors such as time consumption and labor consumption of building closure and difficulty in transportation are solved, but in order to enhance the anti-explosion capacity and the frictional resistance with the wall surface of a roadway, the conventional air bag combination is large in overall size, poor in bonding capacity between the bottom and the roadway and capable of influencing the leakage stoppage effect, and the size of the air bag and the bonding capacity between the air bag and the roadway need to be improved.
The existing air bag type closure is mostly connected with the four walls of a roadway by using rope buckles, hooks, lifting rings, metal lock catches and the like, and because the sectional area of the roadway is large, the air pressure borne by an air bag is large, and in addition, the existence of the inclination angle of the roadway, the tension borne by the connection of the closure and the four walls of the roadway is increased. When resisting the shock wave, the pressure that the gasbag bore increases in the twinkling of an eye, and the risk that current connection was destroyed is very big for the gasbag because of the long damaged gas leakage risk of gasbag that leads to of sliding distance also increases thereupon. It is necessary to reduce the weight of the airbag itself as much as possible and to take measures to reduce the tension at the junction of the airbag and the roadway wall surface.
The existing rapidly-constructed closed wall has certain advantages compared with the building closure, no matter in a light hinged structure or a steel structure, but still has the defects of low efficiency, poor adaptability and the like.
Aiming at the technical problems, the invention provides an anti-explosion multi-bag type air bag and truss structure combined sealing device and method. The invention adopts the improved mode of combined sealing of the anti-explosion multi-bag type air bag and the quick structure of the combined truss, and can well solve the problems.
As shown in figure 1, the combined sealing device of the anti-explosion multi-bag type air bag and the truss structure comprises the anti-explosion multi-bag type air bag and the truss structure. Antiknock multi-bag formula gasbag includes main gasbag and ballonet 1, and the main gasbag includes cuboid gasbag 2 and arch gasbag 3, and cuboid gasbag 2 arranges the well lower part in the tunnel, and arch gasbag 3 sets up in the top of cuboid gasbag 2, and ballonet 1 sets up 2 altogether, sets up the both sides at cuboid gasbag 2.
The truss structure comprises a main rectangular frame structure 4 and an arc adjusting structure 5 which can be correspondingly adjusted according to the shape change of the top of the roadway, wherein the main rectangular frame structure 4 is arranged at the middle lower part of the roadway, and the arc adjusting structure 5 is connected above the main rectangular frame structure 4. One side of the main airbag after being inflated is an explosion facing side, the other side of the main airbag is a safety side, and the safety side is abutted against the front side of the truss structure. Wherein the safety surface of the cuboid air bag 2 is correspondingly propped against the front surface of the main rectangular frame structure 4, and the safety surface of the arched air bag 3 is correspondingly propped against the front surface of the arc-shaped adjusting structure 5. The back of the main rectangular frame structure 4 and the back of the arc adjusting structure 5 are both provided with a plurality of triangular supporting structures 6, and the triangular supporting structures 6 are correspondingly connected with the bottom surface, the side wall or the top surface of the roadway.
The main rectangular frame structure 4 is formed by sequentially connecting a plurality of truss monomers 7, and the arc-shaped adjusting structure 5 and the triangular supporting structure 6 are respectively formed by connecting a plurality of truss monomers 7 and one or more corner connectors 8.
The corner connector 8 comprises a first attaching surface 801 and a second attaching surface 802, one side of the first attaching surface 801 is hinged to one side of the second attaching surface 802, a first arc-shaped strip 803 is arranged on the first attaching surface 801, and a first strip-shaped hole 804 is formed in the center line of the first arc-shaped strip. The second binding surface 802 is provided with a second arc-shaped strip 805, a second strip-shaped hole 806 is formed in the center line of the second arc-shaped strip 805, the first arc-shaped strip 803 and the second arc-shaped strip 805 are arranged in a staggered mode, and the locking nut 10 correspondingly penetrates through the first strip-shaped hole and the second strip-shaped hole. The first attachment surface 801 and the second attachment surface 802 are also provided with screw holes 9 at intervals.
When two adjacent truss single bodies 7 which need to be connected are positioned on the same straight line or are perpendicular to each other, one side face of one truss single body is attached to one side face of the other truss single body, corresponding threaded holes are aligned, and screws are used for connection. When two adjacent truss monomers 7 that need to connect are certain contained angle, pass through a corner connector 8 transition between two truss monomers, the first binding face of corner connector laminates mutually with the free side of one of them truss, and the second binding face of corner connector laminates mutually with the free side of another truss, screws up lock nut 10 on the corner connector to adjust corresponding screw hole well, adopt screwed connection together. The inclined connection installation between the two truss single bodies 7 is more convenient by adopting the corner connecting body 8, and the interaction force between the two single bodies can be enhanced (the strength is higher than that of the hinged connection).
The anti-explosion multi-bag type air bag has the advantages that due to the fact that the truss structures are arranged behind the anti-explosion multi-bag type air bag and are sealed in a combined mode, the risk of slippage of the air bag is basically eliminated, the length of the air bag along a roadway can be greatly reduced, the weight of the air bag is reduced by nearly half, and the damage of the air bag is effectively avoided; after the blast wave is attenuated by the anti-explosion multi-bag type air bag, the rest blast wave can be blocked by the truss structure, and the blast wave is weakened again. According to the invention, the auxiliary bags are added on the two sides, so that the bonding capability of the bottom and the roadway is improved, and the plugging effect is enhanced. In addition, the air bag does not need to be hung with four walls in the installation process due to combined sealing, the truss structure and the air bag can be constructed simultaneously, only personnel need to be added, and the erection time does not need to be prolonged. And the truss structure can also be used as a temporary closed air blocking device for a mine, is convenient to operate and is easy to recover.
As a further design of the invention, the rectangular airbag 2, the arched airbag 3 and the sub-airbag 1 are sewn into a whole and are not communicated with each other. The equal interval in cuboid gasbag, arch gasbag and ballonet is provided with a plurality of and separates cloth 11, it separates into a plurality of independent cavities to separate cuboid gasbag, arch gasbag and ballonet after will aerifing to separate cloth. The separating cloth is provided with a one-way check valve 12 for conducting two adjacent independent chambers in one way, and the conducting direction of the one-way check valve 12 is from the explosion-facing surface to the safety surface. A safety relief valve 13 is also provided at each respective chamber. The safety surfaces of the cuboid airbag, the arched airbag and the auxiliary airbag are all provided with air release valves 14.
The anti-explosion multi-bag type air bag has better anti-explosion buffering performance, is composed of a plurality of air chambers, can effectively avoid the loss caused by the failure of the single-air-chamber air bag, and improves the closed fault-tolerant rate; and because the truss structure is arranged behind the anti-explosion multi-bag type air bag and is combined and sealed with the anti-explosion multi-bag type air bag, the anti-explosion multi-bag type air bag can be designed into an integral structure, and the complex work of mounting and sticking the multi-bag type air bag is reduced.
Furthermore, the explosion-facing surface of the rectangular airbag 2 is connected with the outlet of the first inflation pipeline 15, the explosion-facing surface of the arched airbag 3 is connected with the outlet of the second inflation pipeline 16, the explosion-facing surfaces of the two auxiliary airbags on the two sides of the rectangular airbag are respectively connected with the outlet of the third inflation pipeline 17 and the outlet of the fourth inflation pipeline 18, the inlet of the first inflation pipeline 15 is connected with the air source 19, and the inlets of the second inflation pipeline 16, the third inflation pipeline 17 and the fourth inflation pipeline 18 are communicated and connected with the air source 19 through the four-way valve and the mixing pipeline 20. The air charging pipeline can be bent and has certain strength.
The cuboid airbag and the arched airbag in the anti-explosion multi-bag airbag are inflated in two ways, so that a channel can be provided for personnel investigation when a fire area is unsealed, the existing airbag is closed, most of people cannot walk, and only all the airbags can be detached; the cuboid airbag has certain strength, pedestrians can step on the cuboid airbag to pass through the cuboid airbag, the cuboid airbag occupies most of the volume of a roadway, and if a fire area is not completely extinguished, the cuboid airbag can be sealed again very quickly and conveniently. Because the cuboid gasbag, arch gasbag, vice bag all have safe relief valve, when explosion shock wave acted on meeting the blast face gasbag, gasbag accessible relief valve is deflated by oneself.
Furthermore, a self-operated pressure control valve is arranged at the inlet of the first inflation pipeline and the mixing pipeline. By further adopting the self-operated pressure control valve, the air-supply-type air-conditioning system can lead the operator to leave the air-supply after being communicated (because the cuboid air bag is integrally structured, the arch and the auxiliary bag are only filled, the problems of poor sealing and the like can not occur), and the safety coefficient of the operator is improved. When the cuboid airbag reaches a certain pressure, the cuboid airbag can be connected with a self-operated pressure control valve to seal the truss pedestrian passage, personnel are withdrawn, and the safety coefficient of the personnel is greatly improved. Because of the existence of the self-operated pressure control valve, the air bag can always keep a pressure stabilizing state without worrying about the influence of air leakage, and even if the air bag has partial friction damage, the air bag can keep certain strength and shape due to continuous inflation. When receiving the blast shock wave effect, gasbag accessible safety side relief valve is deflated by oneself, improves buffering effect, reduces the too high cracked risk in the gasbag. And because the calibrated pressure of the safety relief valve is greater than the maximum pressure value of the self-operated pressure control valve, the combined use of the safety relief valve and the self-operated pressure control valve is not influenced.
Furthermore, the anti-explosion multi-bag type airbag further comprises a gas collecting pipeline, wherein a gas inlet of the gas collecting pipeline is positioned on the explosion-facing surface, and the gas collecting pipeline, the first inflation pipeline and the mixing pipeline are distributed and fixed along one side of a roadway air pipe or a roadway water pipe. The gas sample collection work during the airtight period of the air bag can be carried out through the gas collection pipeline.
The anti-explosion multi-bag type air bag is processed by adopting coating cloth, and has the characteristics of impact resistance, wear resistance and flame retardance. The P4U intelligent material cloth layer is additionally arranged on the explosion-facing surface of the anti-explosion multi-bag type air bag, the P4U intelligent material is kept in a loose state in a normal state, is soft and elastic, and once being violently impacted or extruded, molecules are locked with each other immediately, are quickly tightened and hardened to digest external force to form a protective layer, and when the external force disappears, the material returns to the original loose soft elastic state. Although the price of the anti-explosion multi-bag type air bag is a little higher, the whole cost is far lower than that of an inorganic material filling technology, and the materials used by the air bag do not generate toxic gas; the overall volume of the modified air bag is reduced, and the preparation cost, the transportation cost, the setting time and the like are reduced. Cuboid gasbag among the antiknock multi-bag formula gasbag is provided with the support rib, supplementary gasbag is the no type gasbag that does not add the muscle, and the emergence that aerifys the back can be better is deformed, is fit for multiple irregular tunnel.
Further, main rectangular frame structure 4 includes square frame 401, is provided with first vertical support bar 402 at square frame 401's inside interval, square frame and first vertical support bar all are formed by connecting gradually a plurality of truss monomer head and the tail. Arc adjustment structure 5 includes arc frame 501, is provided with second vertical support bar 502 at arc frame 501's inside interval, arc frame and second vertical support bar all are formed by connecting a plurality of truss monomer cooperation a plurality of corner connector.
Furthermore, a wood board is arranged on the front surface of the truss structure, the wood board is composed of a plurality of vertically arranged strip-shaped plate bodies 21, and the strip-shaped plate bodies are correspondingly connected with the truss monomers on the truss structure.
Furthermore, the radian of each of the first arc-shaped strip 803 and the second arc-shaped strip 805 is 45 degrees, and the telescopic angle of the corner connector 8 is 0-45 degrees.
The truss single body (the strength of the single body is far greater than that of a light structure) is provided, the length-width ratio of the truss single body is 3:1, and threads are tapped on a first square frame 701, a second square frame 702 and a prism 703 of the truss single body, wherein the number of the first square frame and the second square frame is four, the number of the prism is 6, and the total number of the threaded holes is 32. The truss monomers are connected by screws. Of course, the number of the threaded holes on the first square frame, the second square frame and the like can be correspondingly increased or decreased according to needs.
The truss structure has a relatively light hinge structure, the strength is improved by more than 4 times, and the key problem of large rigid and airtight weight is solved. The truss structure wall body is composed of truss single bodies, corner connectors and wood boards, and the truss single bodies and the corner connectors are connected into various shapes to adapt to various roadway sections. The triangular support structure formed by the truss single bodies and the main rectangular frame structure or the arc-shaped adjusting structure can be connected into a whole by utilizing the corner connecting bodies, and the strength of the truss constructed wall body is improved by connecting the triangular support structure and the four walls of the roadway. As for the light hinge structure (only the bottom support triangular structure), the truss single body is easier to be connected with four walls, and the strength is much higher than that of the light hinge structure. Because the section of the roadway is irregular, the light hinge structure only supports the lower part of the section, and when explosion overpressure comes temporarily, the risk that the upper part of the section is destroyed is higher due to stress concentration. According to the truss constructed wall, the truss single bodies are easy to connect with the four walls of the roadway, the triangular supporting structures are added on the four surfaces of the roadway according to the situation, and the risk that the truss structures are destroyed can be effectively avoided.
The invention also provides a method for jointly sealing the anti-explosion multi-bag type air bag and the truss structure, which adopts the device and comprises the following steps:
step one, arrangement work
The anti-explosion multi-bag type air bag comprises an anti-explosion multi-bag type air bag body, a first inflation pipeline, a second inflation pipeline, a third inflation pipeline, a fourth inflation pipeline, a mixing pipeline, a truss monomer and a wood board, wherein the anti-explosion multi-bag type air bag body, the first inflation pipeline, the second inflation pipeline, the third inflation pipeline and the fourth inflation pipeline are conveyed to a closed position, sundries in a closed place are properly cleaned, the anti-explosion face of the anti-explosion multi-bag type air bag body is connected with the gas acquisition pipeline, the first inflation pipeline, the second inflation pipeline, the third inflation pipeline and the fourth inflation pipeline are connected with the mixing pipeline, and the first inflation pipeline, the gas acquisition pipeline and the mixing pipeline are installed and fixed on one side of a pressure air pipe and face to the safety face.
At a proper position behind the anti-explosion multi-bag type air bag, the bottom plate is cut, the width of the bottom plate is the width of the truss monomer, and the depth of the bottom plate is more than half of the height of the truss monomer.
Step two, inflating operation and assembling truss structure
After the anti-explosion multi-bag type air bag is spread, the rectangular air bag is inflated through a first inflation pipeline while the roadway bottom plate is cut, and after the rectangular air bag is unfolded, the arch-shaped air bag and the two auxiliary air bags are inflated through a mixing pipeline; connecting the truss single bodies while inflating, successfully connecting the bottom main rectangular frame structure, and then installing an arc-shaped adjusting structure according to the shape of the top of the roadway; and then triangular supporting structures are arranged on the back surfaces of the main rectangular frame structure and the arc-shaped adjusting structure.
When the width of the main rectangular frame structure is not consistent with that of the roadway, appropriate cutting can be performed on the side wall of the roadway; similarly, the roadway bottom plate area corresponding to the triangular supporting structure at the bottom is also subjected to undercutting treatment, and the triangular supporting structures positioned on the side wall and the top end are connected with the anchor rod and the anchor net of the roadway or are drilled and fixed through expansion screws.
After the truss structures are successfully erected, the strip-shaped plate bodies are connected with the corresponding truss single bodies through screws so as to fill gaps between the square frame and the first vertical supporting strips or gaps between adjacent first vertical supporting strips; to the arc adjustment structure above the main rectangular frame structure, the strip-shaped plate body can be cut by field processing so as to fill the gap between the arc frame and the second vertical supporting strip.
Leaving a place at the main rectangular frame structure, which is not filled with wood boards for pedestrians; after the cuboid air bags are filled, the main rectangular frame structure can be completely sealed by the wood boards, and people are evacuated; after the inflation is finished, the antiknock multi-bag type air bag can be tightly attached to the wall of the roadway by virtue of good elasticity of the coating cloth, and when the inflation pressure is reached, the air bag can be kept in a pressure stabilizing state all the time through the self-operated pressure control valve.
Step three, gas sample collection
During the airtight, in order to facilitate the real-time monitoring of air temperature, gas concentration and oxygen concentration parameters inside the airtight, gas sample collection can be carried out through a gas collection pipeline.
Step four, investigation of personnel
Before the fire area is unsealed, people often need to enter the fire area to detect whether the fire area is completely extinguished; a part of strip-shaped plate bodies are taken out of the main rectangular frame structure, so that pedestrians can pass through the main rectangular frame structure; the arched air bag and the auxiliary air bag are deflated, and the rectangular air bag is not deflated and has certain strength, so that personnel can pass through the upper end of the rectangular air bag by using a scaffold and bring the scaffold to the explosion-facing surface; if the fire area is not completely extinguished, the fire area returns immediately, the fire area passes through the upper end of the cuboid air bag, the air source is connected, the arch air bag and the auxiliary air bag can be rapidly inflated, and personnel can leave the fire area after mounting the strip-shaped plate body and can rapidly finish the re-sealing work; if the fire zone is completely extinguished, the combined sealing device can be deflated, disassembled and recycled.
Step five, recovery work
After the sealing is finished, opening the fire area, closing the air source, and opening an air release valve on the safety surface of the anti-explosion multi-bag type air bag; meanwhile, the truss structures are sequentially disassembled from top to bottom, the wood boards are firstly disassembled, and then the truss monomers are sequentially disassembled; and finally, folding the air bag, and recovering and arranging the truss monomer and the wood board.
Parts not described in the above modes can be realized by adopting or referring to the prior art.
It is intended that any equivalents, or obvious variations, which may be made by those skilled in the art in light of the teachings herein, be considered within the scope of the present invention.
Claims (10)
1. An antiknock multi-bag type air bag and truss structure combined sealing device is characterized in that: the device comprises an anti-explosion multi-bag type air bag and a truss structure, wherein the anti-explosion multi-bag type air bag comprises a main air bag and an auxiliary air bag, the main air bag comprises a cuboid air bag and an arched air bag, the cuboid air bag is arranged at the middle lower part of a roadway, the arched air bag is arranged above the cuboid air bag, and the auxiliary air bag is arranged at two sides of the cuboid air bag;
the truss structure comprises a main rectangular frame structure and an arc adjusting structure which can be correspondingly adjusted according to the shape change of the top of the roadway, the main rectangular frame structure is arranged at the middle lower part of the roadway, and the arc adjusting structure is connected above the main rectangular frame structure;
one surface of the main airbag after being inflated is an explosion-facing surface, the other surface of the main airbag is a safety surface, the safety surface is abutted against the front surface of the truss structure, the safety surface of the cuboid airbag is correspondingly abutted against the front surface of the main rectangular frame structure, and the safety surface of the arched airbag is correspondingly abutted against the front surface of the arc-shaped adjusting structure;
the back surfaces of the main rectangular frame structure and the arc-shaped adjusting structure are respectively provided with a plurality of triangular supporting structures, and the triangular supporting structures are correspondingly connected with the bottom surface, the side wall or the top surface of the roadway;
the main rectangular frame structure is formed by sequentially connecting a plurality of truss single bodies, and the arc-shaped adjusting structure and the triangular supporting structure are respectively formed by connecting a plurality of truss single bodies and one or more corner connectors;
the truss single body is of a cuboid frame structure and comprises a first square frame and a second square frame, four prisms are correspondingly connected at the four corners of the first square frame and the second square frame, the first square frame, the second square frame and the four prisms are of an integrated structure, and threaded holes are formed in the first square frame, the second square frame and the prisms at intervals;
the corner connector comprises a first binding surface and a second binding surface, one side of the first binding surface is hinged to one side of the second binding surface, a first arc-shaped strip is arranged on the first binding surface, a first strip-shaped hole is formed in the center line of the first arc-shaped strip, a second arc-shaped strip is arranged on the second binding surface, a second strip-shaped hole is formed in the center line of the second arc-shaped strip, the first arc-shaped strip and the second arc-shaped strip are arranged in a staggered mode, and a locking nut correspondingly penetrates through the first strip-shaped hole and the second strip-shaped hole; threaded holes are also formed in the first binding surface and the second binding surface at intervals;
when two adjacent truss single bodies needing to be connected are positioned on the same straight line or are vertical to each other, one side face of one truss single body is attached to one side face of the other truss single body, corresponding threaded holes are aligned, and screws are used for connection;
when two adjacent truss monomers that need to connect are certain contained angle, pass through a corner connector transition between two truss monomers, the first binding face of corner connector is laminated mutually with the free side of one of them truss, and the second binding face of corner connector is laminated mutually with the free side of another truss, screws up the lock nut on the corner connector to adjust corresponding screw hole well, adopt screwed connection together.
2. The combined sealing device of an antiknock multi-bag airbag and a truss structure as claimed in claim 1, wherein: the cuboid airbag, the arched airbag and the auxiliary airbag are sewn into a whole and are not communicated with each other; the inner parts of the cuboid airbag, the arched airbag and the auxiliary airbag are provided with a plurality of separation cloth at intervals, and the cuboid airbag, the arched airbag and the auxiliary airbag after inflation are separated into a plurality of independent chambers by the separation cloth.
3. The combined sealing device of the antiknock multi-bag airbag and the truss structure as claimed in claim 2, wherein: the separation cloth is provided with a one-way check valve for conducting two adjacent independent chambers in one way, and the conduction direction of the one-way check valve is from the explosion-facing surface to the safety surface; a safety relief valve is arranged at the position corresponding to each independent chamber; the safety surfaces of the cuboid airbag, the arched airbag and the auxiliary airbag are all provided with air release valves.
4. The combined sealing device of an antiknock multi-bag airbag and a truss structure as claimed in claim 1, wherein: the explosion-facing surface of the cuboid airbag is connected with an outlet of a first inflation pipeline, the explosion-facing surface of the arched airbag is connected with an outlet of a second inflation pipeline, the explosion-facing surfaces of two auxiliary airbags on two sides of the cuboid airbag are respectively connected with an outlet of a third inflation pipeline and an outlet of a fourth inflation pipeline, an inlet of the first inflation pipeline is connected with an air source, and inlets of the second inflation pipeline, the third inflation pipeline and the fourth inflation pipeline are communicated and connected with the air source through a mixing pipeline; self-operated pressure control valves are arranged on the first inflation pipeline and the mixing pipeline.
5. The combined sealing device of the antiknock multi-bag airbag and the truss structure as claimed in claim 4, wherein: the anti-explosion multi-bag type airbag further comprises a gas collecting pipeline, wherein a gas inlet of the gas collecting pipeline is positioned on the explosion-facing surface, and the gas collecting pipeline, the first inflation pipeline and the mixing pipeline are all distributed and fixed along one side of a roadway air pipe or a water pipe.
6. The combined sealing device of an antiknock multi-bag airbag and a truss structure as claimed in claim 1, wherein: the anti-explosion multi-bag type air bag is processed by adopting coating cloth, and a P4U intelligent material cloth layer is additionally arranged on the explosion-facing surface of the anti-explosion multi-bag type air bag;
cuboid gasbag among the antiknock multi-bag formula gasbag is provided with the support rib, vice gasbag is the unshaped gasbag of not adding the muscle.
7. The combined sealing device of an antiknock multi-bag airbag and a truss structure as claimed in claim 1, wherein: the main rectangular frame structure comprises a square frame, first vertical supporting strips are arranged inside the square frame at intervals, and the square frame and the first vertical supporting strips are formed by sequentially connecting a plurality of truss monomers end to end;
the arc is adjusted the structure and is included the arc frame, is provided with second vertical support bar at the inside interval of arc frame, arc frame and second vertical support bar all are formed by connecting a plurality of truss monomer cooperation a plurality of corner connector.
8. The combined sealing device of an antiknock multi-bag airbag and a truss structure as claimed in claim 1, wherein: the front surface of the truss structure is also provided with a wood board, the wood board is composed of a plurality of vertically arranged strip-shaped board bodies, and the strip-shaped board bodies are correspondingly connected with the truss monomers on the truss structure.
9. The combined sealing device of an antiknock multi-bag airbag and a truss structure as claimed in claim 1, wherein: the radian of the first arc-shaped strip and the radian of the second arc-shaped strip are both 45 degrees, and the telescopic angle of the corner connector is 0-45 degrees.
10. A method for the combined sealing of an antiknock multi-bag air-bag and a truss structure, using the device as claimed in any one of claims 1 to 9, comprising the steps of:
step one, arrangement work
Conveying an anti-explosion multi-bag type airbag, a gas collecting pipeline, a first inflation pipeline, a second inflation pipeline, a third inflation pipeline, a fourth inflation pipeline, a mixing pipeline, a truss monomer and a wood board to a closed position, cleaning sundries in the closed position, installing and connecting the gas collecting pipeline, the first inflation pipeline, the second inflation pipeline, the third inflation pipeline and the fourth inflation pipeline on an explosion-facing surface of the anti-explosion multi-bag type airbag, connecting the second inflation pipeline, the third inflation pipeline and the fourth inflation pipeline with the mixing pipeline, installing and fixing the first inflation pipeline, the gas collecting pipeline and the mixing pipeline on one side of a pressure air pipe, and enabling the first inflation pipeline, the gas collecting pipeline and the mixing pipeline to be arranged and fixed to a safety surface;
at a proper position behind the anti-explosion multi-bag type air bag, the bottom plate is cut, the width of the bottom plate is the width of the truss monomer, and the depth of the bottom plate is more than half of the height of the truss monomer;
step two, inflating operation and assembling truss structure
After the anti-explosion multi-bag type air bag is spread, the rectangular air bag is inflated through a first inflation pipeline while the roadway bottom plate is cut, and after the rectangular air bag is unfolded, the arch-shaped air bag and the two auxiliary air bags are inflated through a mixing pipeline; connecting the truss single bodies while inflating, successfully connecting the bottom main rectangular frame structure, and then installing an arc-shaped adjusting structure according to the shape of the top of the roadway; mounting a triangular support structure on the back of the main rectangular frame structure and the arc-shaped adjusting structure;
when the width of the main rectangular frame structure is inconsistent with that of the roadway, appropriate cutting is carried out on the side wall of the roadway; similarly, the roadway bottom plate area corresponding to the triangular supporting structure at the bottom is also subjected to undercutting treatment, and the triangular supporting structures at the side wall and the top end are connected with an anchor rod and an anchor net of the roadway or are drilled and fixed through expansion screws;
after the truss structures are successfully erected, the strip-shaped plate bodies are connected with the corresponding truss single bodies through screws so as to fill gaps between the square frame and the first vertical supporting strips or gaps between adjacent first vertical supporting strips; for the arc-shaped adjusting structure above the main rectangular frame structure, the strip-shaped plate body is subjected to field processing and cutting to fill the gap between the arc-shaped frame and the second vertical supporting strip;
leaving a place at the main rectangular frame structure, which is not filled with wood boards for pedestrians; after the cuboid air bags are filled, the main rectangular frame structure can be completely sealed by the wood boards, and people are evacuated; after the inflation is finished, the antiknock multi-bag type air bag can be tightly attached to the wall of the roadway by virtue of good elasticity of the coating cloth, and when the inflation reaches the inflation pressure, the air bag can be kept in a pressure-stabilizing state all the time through the self-operated pressure control valve;
step three, gas sample collection
During the sealing period, in order to facilitate the real-time monitoring of parameters of air temperature, gas concentration and oxygen concentration in the sealed interior, gas sample collection can be carried out through a gas collection pipeline;
step four, investigation of personnel
Before the fire area is unsealed, people often need to enter the fire area to detect whether the fire area is completely extinguished; a part of strip-shaped plate bodies are taken out of the main rectangular frame structure, so that pedestrians can pass through the main rectangular frame structure; the arched air bag and the auxiliary air bag are deflated, and the rectangular air bag is not deflated and has certain strength, so that personnel can pass through the upper end of the rectangular air bag by using a scaffold and bring the scaffold to the explosion-facing surface; if the fire area is not completely extinguished, the fire area returns immediately, the fire area passes through the upper end of the cuboid air bag, the air source is connected, the arch air bag and the auxiliary air bag can be rapidly inflated, and personnel can leave the fire area after mounting the strip-shaped plate body and can rapidly finish the re-sealing work; if the fire zone is completely extinguished, the combined sealing device can be deflated, disassembled and recycled;
step five, recovery work
After the sealing is finished, opening the fire area, closing the air source, and opening an air release valve on the safety surface of the anti-explosion multi-bag type air bag; meanwhile, the truss structures are sequentially disassembled from top to bottom, the wood boards are firstly disassembled, and then the truss monomers are sequentially disassembled; and finally, folding the air bag, and recovering and arranging the truss monomer and the wood board.
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| CN201027547Y (en) * | 2007-05-08 | 2008-02-27 | 于泓智 | Mine down-hole folding type ballonet life-saving capsule |
| CN101434476A (en) * | 2008-12-16 | 2009-05-20 | 上海隧道工程股份有限公司 | Sealing plugging material and use thereof in shield break-in and break-out construction |
| CN102268952B (en) * | 2011-06-20 | 2013-02-20 | 江苏河谷矿业科技发展有限公司 | Coal mine down-hole air sac type airtight cabin door |
| CN203742664U (en) * | 2013-12-27 | 2014-07-30 | 西安新竹防灾救生设备有限公司 | Roadway quick-blocking air bag |
| CN108798768A (en) * | 2018-05-21 | 2018-11-13 | 金川集团股份有限公司 | A method of using recyclable air bag come reservation of filling small well |
| CN211230552U (en) * | 2020-01-02 | 2020-08-11 | 中国矿业大学(北京) | Antiknock multilocular quick airtight gasbag |
| CN110985098B (en) * | 2020-01-02 | 2020-12-15 | 中国矿业大学(北京) | Anti-explosion multi-bag quick-sealing air bag and using method thereof |
| CN111608728B (en) * | 2020-05-27 | 2021-09-24 | 中南大学 | Method for forming closed space in mine roadway |
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